linux-kernel - Re: kobject_init and the zeroed-out-memory requirement

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Date:	Sun, 5 Oct 2014 19:09:50 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Greg KH <gregkh@...uxfoundation.org>
Cc:	Jason Noakes <jjnoakes@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: kobject_init and the zeroed-out-memory requirement

On Sun, Oct 05, 2014 at 04:24:57PM -0700, Greg KH wrote:
> On Sun, Oct 05, 2014 at 06:13:05PM -0400, Jason Noakes wrote:
> > > No driver should be working with "raw" kobjects.
> > 
> > I don't agree, but it's irrelevant.
> 
> Not at all.  I'd wager that if a driver is messing around with a "raw"
> kobject, it is doing something seriously wrong.  Of course there are
> exceptions, but those are very rare, and exceptions.  A driver should be
> using the driver core, and the functions and objects provided there, and
> provided by the bus it lives on.
> 
> So, have a pointer to some driver code that is calling
> kobject_initialize()?  I'd love to see it.
> 

Lots to choose from. In drivers/:

$ git grep kobject_init | wc
     65     289    4880
$ git grep kobject_init | grep -v base | wc
     62     277    4694
$ git grep kobject_init_and_add | grep -v base | wc
     47     232    3698
$ git grep kobject_add | grep -v base | wc
     20     111    1486

Guenter
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